René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"`imshow` fails to plot boolean arrays","articleBody":"\u003c!-- Thanks for helping us make proplot a better package! If this is a bug report, please use the template provided below. If this is a feature request, you can delete the template text (just try to be descriptive with your request). --\u003e\r\n\r\n### Description\r\n\r\n`imshow` errors due to `np.sign` being applied to a boolean.\r\n\r\n### Steps to reproduce\r\n\r\nA \"[Minimal, Complete and Verifiable Example](http://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports)\" will make it much easier for maintainers to help you.\r\n\r\n```python\r\nimport proplot as pplt\r\nimport numpy as np\r\nfig, ax = pplt.subplots()\r\nax.imshow(np.random.rand(5, 5).astype(bool))\r\n```\r\n\r\n**Expected behavior**: [What you expected to happen]\r\n\r\n**Actual behavior**: [What actually happened]\r\n\r\n\r\n```python traceback\r\n---------------------------------------------------------------------------\r\nUFuncTypeError                            Traceback (most recent call last)\r\nCell In[9], line 2\r\n      1 fig, ax = pplt.subplots()\r\n----\u003e 2 ax.imshow(np.random.rand(5, 5).astype(bool))\r\n\r\nFile /u/aurora-r0/staniewi/repos/proplot/proplot/internals/inputs.py:292, in _preprocess_or_redirect.\u003clocals\u003e._decorator.\u003clocals\u003e._preprocess_or_redirect(self, *args, **kwargs)\r\n    289             ureg.setup_matplotlib(True)\r\n    291 # Call main function\r\n--\u003e 292 return func(self, *args, **kwargs)\r\n\r\nFile /u/aurora-r0/staniewi/repos/proplot/proplot/axes/plot.py:4150, in PlotAxes.imshow(self, z, **kwargs)\r\n   4146 \"\"\"\r\n   4147 %(plot.imshow)s\r\n   4148 \"\"\"\r\n   4149 kw = kwargs.copy()\r\n-\u003e 4150 kw = self._parse_cmap(z, default_discrete=False, **kw)\r\n   4151 guide_kw = _pop_params(kw, self._update_guide)\r\n   4152 m = self._call_native('imshow', z, **kw)\r\n\r\nFile /u/aurora-r0/staniewi/repos/proplot/proplot/internals/warnings.py:110, in _rename_kwargs.\u003clocals\u003e._decorator.\u003clocals\u003e._deprecate_kwargs_wrapper(*args, **kwargs)\r\n    105         key_new = key_new.format(value)\r\n    106     _warn_proplot(\r\n    107         f'Keyword {key_old!r} was deprecated in version {version} and may '\r\n    108         f'be removed in {_next_release()}. Please use {key_new!r} instead.'\r\n    109     )\r\n--\u003e 110 return func_orig(*args, **kwargs)\r\n\r\nFile /u/aurora-r0/staniewi/repos/proplot/proplot/axes/plot.py:2230, in PlotAxes._parse_cmap(self, cmap, cmap_kw, c, color, colors, norm, norm_kw, extend, vmin, vmax, vcenter, discrete, default_discrete, default_cmap, skip_autolev, min_levels, plot_lines, plot_contours, *args, **kwargs)\r\n   2226     vmin, vmax, kwargs = self._parse_level_lim(\r\n   2227         *args, vmin=vmin, vmax=vmax, **kwargs\r\n   2228     )\r\n   2229     if autodiverging and vmin is not None and vmax is not None:\r\n-\u003e 2230         if abs(np.sign(vmax) - np.sign(vmin)) == 2:\r\n   2231             isdiverging = True\r\n   2232 if discrete:\r\n\r\nUFuncTypeError: ufunc 'sign' did not contain a loop with signature matching types \u003cclass 'numpy.dtype[bool_]'\u003e -\u003e None\r\n```\r\n\r\n### Equivalent steps in matplotlib\r\n\r\n\r\n```python\r\n# your code here, if applicable\r\nimport matplotlib.pyplot as plt\r\nimport numpy as np\r\nfig, ax = plt.subplots()\r\nax.imshow(np.random.rand(5, 5).astype(bool))\r\n```\r\n\r\n### Proplot version\r\n\r\nPaste the results of `import matplotlib; print(matplotlib.__version__); import proplot; print(proplot.version)` here.\r\n\r\n```\r\n\u003e\u003e\u003e import matplotlib; print(matplotlib.__version__); import proplot; print(proplot.version)\r\n3.4.3\r\n0.0.post4012\r\n```\r\n(I just forked the latest. Seems like the tags aren't visible, so setuptools_scm doesn't like it)","author":{"url":"https://github.com/scottstanie","@type":"Person","name":"scottstanie"},"datePublished":"2023-03-23T16:44:52.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/409/proplot/issues/409"}